Mar 10, 2022 · Valid stay dates: December 31, 2021 — December 31, 2022. Start your day with 60 minutes of morning beach yoga, followed by our special selection of refreshing, freshly made Okinawan healthy smoothies! Details. Our Location. Getting Here. Sheraton Okinawa Sunmarina Resort. Aza Fuchaku, Onna-son,Kunigami-gun,Japan,Okinawa.